Nonlinear Meta-Devices:From Plasmonic to Dielectric  

作　　者：Rong Lin Jin Yao Zhihui Wang Che Ting Chan Din Ping Tsai 

机构地区：[1]Department of Electrical Engineering,City University of Hong Kong,Hong Kong 999077,China [2]Department of Physics,The Hong Kong University of Science and Technology,Hong Kong 999077,China [3]Centre for Biosystems,Neuroscience,and Nanotechnology,City University of Hong Kong,Hong Kong 999077,China [4]The State Key Laboratory of Terahertz and Millimeter Waves,City University of Hong Kong,Hong Kong 999077,China

出　　处：《Engineering》2025年第2期15-24,共10页工程(英文)

基　　金：supported by the University Grants Committee/Research Grants Council of the Hong Kong Special Administrative Region,China(AoE/P-502/20,C1015-21E,C5031-22G,CityU15303521,CityU11305223,CityU11310522,CityU11300123,and G-CityU 101/22);the City University of Hong Kong(9380131 and 7005867);the National Natural Science Foundation of China(62375232).

摘　　要：Meta-devices have significantly revitalized the study of nonlinear optical phenomena.At the nanoscale,the detrimental effects of phase mismatching between fundamental and harmonic waves can be substantially reduced.This review analyzes the theoretical frameworks of how plasmonic and dielectric materials induce nonlinear optical properties.Plasmonic and dielectric nonlinear meta-devices that can excite strong resonant modes for efficiency enhancement are explored.We outline different strategies designed to shape the radiation pattern in order to increase the collection capability of nonlinear signals emitted from meta-devices.In addition,we discuss how nonlinear phase manipulation in meta-devices can integrate the benefits of efficiency enhancement and radiation shaping,not only boosting the energy density of the nonlinear signal but also facilitating a wide range of applications.Finally,potential research directions within this field are discussed.

关 键 词：Nonlinear optics NANOPHOTONICS Meta-devices Metasurfaces PLASMONIC DIELECTRIC 

分 类 号：O437[机械工程—光学工程] O436[理学—光学]